Heat transport into the interior ocean induced by water-mass subduction
Abstract The subduction of oceanic water masses provides a crucial pathway for anthropogenic heat to enter the subsurface ocean, thereby shaping deep-reaching warming signatures. Analyzing data from eight ocean and atmosphere reanalysis datasets, we show that the average annual subduction rate of th...
Published in: | Environmental Research Letters |
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Online Access: | http://dx.doi.org/10.1088/1748-9326/ad50ef https://iopscience.iop.org/article/10.1088/1748-9326/ad50ef https://iopscience.iop.org/article/10.1088/1748-9326/ad50ef/pdf |
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crioppubl:10.1088/1748-9326/ad50ef 2024-06-23T07:56:56+00:00 Heat transport into the interior ocean induced by water-mass subduction Liu, LingLing Li, Yuanlong Wang, Fan Ren, Qiuping National Natural Science Foundation of China Laoshan Laboratory National Key Research and Development Program of China Taishan Scholars Program Oceanographic Data Center, Institute of Oceanology, Chinese Academy of Sciences 2024 http://dx.doi.org/10.1088/1748-9326/ad50ef https://iopscience.iop.org/article/10.1088/1748-9326/ad50ef https://iopscience.iop.org/article/10.1088/1748-9326/ad50ef/pdf unknown IOP Publishing https://creativecommons.org/licenses/by/4.0/ https://iopscience.iop.org/info/page/text-and-data-mining Environmental Research Letters ISSN 1748-9326 journal-article 2024 crioppubl https://doi.org/10.1088/1748-9326/ad50ef 2024-06-03T08:15:15Z Abstract The subduction of oceanic water masses provides a crucial pathway for anthropogenic heat to enter the subsurface ocean, thereby shaping deep-reaching warming signatures. Analyzing data from eight ocean and atmosphere reanalysis datasets, we show that the average annual subduction rate of the global ocean (excluding 10°S-10°N) is 312.4±27.9 Sv, resulting in a mean heat transport of 20.2±2.1 PW towards the subsurface ocean. This subduction-driven heat transport has exhibited an increase of 0.09±0.08 PW/decade since 1970. The increase predominantly stems from the overall enhancement of subduction within the latitudes of 30°S-50°S, dictated by intensified westerly winds that lead to the deepening of the local mixed layer depth. Our findings underscore the essence of wind-driven changes in the Southern Ocean subduction, which wield considerable influence over the global climate by regulating the vertical transport of heat and carbon from the sea surface to the deep waters. Article in Journal/Newspaper Southern Ocean IOP Publishing Southern Ocean Environmental Research Letters 19 7 074002 |
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Abstract The subduction of oceanic water masses provides a crucial pathway for anthropogenic heat to enter the subsurface ocean, thereby shaping deep-reaching warming signatures. Analyzing data from eight ocean and atmosphere reanalysis datasets, we show that the average annual subduction rate of the global ocean (excluding 10°S-10°N) is 312.4±27.9 Sv, resulting in a mean heat transport of 20.2±2.1 PW towards the subsurface ocean. This subduction-driven heat transport has exhibited an increase of 0.09±0.08 PW/decade since 1970. The increase predominantly stems from the overall enhancement of subduction within the latitudes of 30°S-50°S, dictated by intensified westerly winds that lead to the deepening of the local mixed layer depth. Our findings underscore the essence of wind-driven changes in the Southern Ocean subduction, which wield considerable influence over the global climate by regulating the vertical transport of heat and carbon from the sea surface to the deep waters. |
author2 |
National Natural Science Foundation of China Laoshan Laboratory National Key Research and Development Program of China Taishan Scholars Program Oceanographic Data Center, Institute of Oceanology, Chinese Academy of Sciences |
format |
Article in Journal/Newspaper |
author |
Liu, LingLing Li, Yuanlong Wang, Fan Ren, Qiuping |
spellingShingle |
Liu, LingLing Li, Yuanlong Wang, Fan Ren, Qiuping Heat transport into the interior ocean induced by water-mass subduction |
author_facet |
Liu, LingLing Li, Yuanlong Wang, Fan Ren, Qiuping |
author_sort |
Liu, LingLing |
title |
Heat transport into the interior ocean induced by water-mass subduction |
title_short |
Heat transport into the interior ocean induced by water-mass subduction |
title_full |
Heat transport into the interior ocean induced by water-mass subduction |
title_fullStr |
Heat transport into the interior ocean induced by water-mass subduction |
title_full_unstemmed |
Heat transport into the interior ocean induced by water-mass subduction |
title_sort |
heat transport into the interior ocean induced by water-mass subduction |
publisher |
IOP Publishing |
publishDate |
2024 |
url |
http://dx.doi.org/10.1088/1748-9326/ad50ef https://iopscience.iop.org/article/10.1088/1748-9326/ad50ef https://iopscience.iop.org/article/10.1088/1748-9326/ad50ef/pdf |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
Environmental Research Letters ISSN 1748-9326 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ https://iopscience.iop.org/info/page/text-and-data-mining |
op_doi |
https://doi.org/10.1088/1748-9326/ad50ef |
container_title |
Environmental Research Letters |
container_volume |
19 |
container_issue |
7 |
container_start_page |
074002 |
_version_ |
1802650323404193792 |